How the Heart Works - The Heart | NHLBI, NIH
https://www.nhlbi.nih.gov/health/heart
WEBMar 24, 2022 · Your heart is at the center of your circulatory system. This system is a network of blood vessels, such as arteries, veins, and capillaries, that carries blood to and from all areas of your body. Your blood carries the oxygen and nutrients that your organs need to work properly.
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